And I should also ask whether I need one #5 and one #6, or do I need two of each?
Are you looking to monitor the spare tire in storage or only while in use? I don't think RL G1 (or G2) supports a fifth TPMS in the system. I've also read of problems with a fifth sensor overriding an installed wheel and giving bad result for the installed wheel.I need to get a TPMS unit for my full-size spare.
There are aftermarket TPMS sensors but you run the risk of them not mounting very well, lasting very long, or not communicating correctly with Honda's TPMS receivers. There are industry standards for these things but different automotive companies still build their TPMSs in different ways. For example, there are Direct TPMS and Indirect TPMS for starters; then it gets complicated, including the frequencies used by these sensors, how often they transmit data, the fidelity of the data transmitted, and more.... Wow I just checked the price at Bernardis and they ain't cheap ($62.30). I saw references to G2 owners buying sets of four from Honda for less than four of these G1s would cost from Bernardis. I am surprised the G1s are so much more expensive than the G2s. Glad I only need one!
The posts I found on the ROC where users are talking about a fifth TPMS tire sensor are discussing the "what ifs" related to a sensor in the spare interfering with the four that are in use or the users "think" it interferes. That "what if" and "think" has proven to be wrong by those that have such sensors in their full-size spare that's carried in their service tray.Are you looking to monitor the spare tire in storage or only while in use? I don't think RL G1 (or G2) supports a fifth TPMS in the system. I've also read of problems with a fifth sensor overriding an installed wheel and giving bad result for the installed wheel.
Hmmm. That is something I'd like to know more about. I assume by "introduced" you mean actually mounted and put into use? Presumably this is not an issue when the new TPMS is just sitting there as a spare?...
I've heard that when new TPMS sensors are introduced, the receivers must go into a relearn mode so they recognize the new sensor. I've read that the Gen2 has s self-learning system (i.e. no human involvement necessary) but I don't know about the Gen1.
Yes and probablyHmmm. That is something I'd like to know more about. I assume by "introduced" you mean actually mounted and put into use? Presumably this is not an issue when the new TPMS is just sitting there as a spare?